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INVESTMENT PROPERTY (Details) - CNY (¥)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of detailed information about investment property [line items]    
As of beginning of the year ¥ 0  
As of end of the year 0 ¥ 0
Fair value of investment property 269,900,000  
Cost    
Disclosure of detailed information about investment property [line items]    
As of beginning of the year 37,253,000 37,253,000
Transferred from property, plant and equipment 331,359,000 0
Transferred from right-of-use assets 32,619,000 0
As of end of the year 401,231,000 37,253,000
Accumulated depreciation    
Disclosure of detailed information about investment property [line items]    
As of beginning of the year (1,886,000) (1,886,000)
Depreciation for the year 0 0
Transferred from property, plant and equipment (47,452,000) 0
Transferred from right-of-use assets (4,649,000) 0
As of end of the year (53,987,000) (1,886,000)
Impairment    
Disclosure of detailed information about investment property [line items]    
As of beginning of the year (35,367,000) (35,367,000)
Transferred from property, plant and equipment (283,907,000) 0
Transferred from right-of-use assets (27,970,000) 0
As of end of the year ¥ (347,244,000) ¥ (35,367,000)